The cross reference is useful but the replacement PK series normally outperform the PH series. I have PH268-E2.3 and PK 268-2A. The PH are eight wire, and at 3.4 A in bipolar parallel really don't out performed the PK's at 2 A half winding. The PH 268-E2.3's have 135 OZin holding torque, and the PH268-2A's have 187 OZin. The flatter torque curve of the PH meant slightly faster rapids on my Lathe, but I swapped to the PK's.
__________________ Regards,
Mark
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